<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<div>
    <%
     for (int i=0;i <5;i++){
         for ( int a =0;a <=i;a++){
            out.print("*");
         }
         out.print("<br>");
    }

    %>
</div>
</body>
</html>